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Finding the Fourth Proportional to 340,921.94, 511,300.90 and 104,266.67

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Solution

The fourth proportional to 340,921.94, 511,300.90 and 104,266.67 is: 156,374.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,921.94 : 511,300.90 = 104,266.67 : x
  2. Step 2: Convert to fraction form
    340,921.94/511,300.90 = 104,266.67/x
  3. Step 3: Cross multiply
    340,921.94x = 511,300.90 × 104,266.67
  4. Step 4: Simplify right side
    340,921.94x = 53,311,642,211.00
  5. Step 5: Solve for x
    x = 53,311,642,211.00/340,921.94
  6. Step 6: Final answer
    x = 156,374.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.